2.5. Gas chromatography-mass spectrometry (GC–MS)
GC–MS (EI-MS) analyses were carried out on a QP 5050 mass
selective detector coupled to a Shimadzu GC17A gas chromatograph
(Shimadzu, Kyoto, Japan), under the same chromatographic
conditions as for the GC analyses on a DB-FFAP column. MS data
were recorded from m/z 40–350, with electron energy of 70 eV
and processed by Class 5000 v 2.2 MS-Workstation software.